Test 6 The Process of Gaining or Losing Weight

 The Process of Gaining or Losing Weight

 

The process of gaining or losing weight can be explained / by comparing your body to your car. / Both run on fuel，food for your body and gasoline for your car. / Both of the fuels must first be converted into heat, then energy, / some of which is used to do work, / and some emitted as waste, and just as your car uses more energy / when the engine is racing¹ than when it is idling, / so does your body use more energy when you are working harder than when you are resting. /

 

However, there is one significant difference between them. / Your car cannot store fuel / by turning it into something else； all gasoline not consumed remains² as gasoline. / But your body stores excess energy as fat. / When the gas tank is completely empty, / the car won’t run； / but your body can burn fat to provide more energy. / Therefore, if you want to gain weight，/ you must do either of two things： / eat more calories, / or use less through inactivity. / If you want to lose weight, / you do the reverse ： decrease your intake³ of calories or increase the amount of energy you spend- / There is no other way, gaining or losing weight is always a relation / between intake and output of potential energy. /

1 racing   

n.竞赛，赛马；adj.竞赛用的，赛马用的

参考例句：

• I was watching the racing on television last night.昨晚我在电视上看赛马。
• The two racing drivers fenced for a chance to gain the lead.两个赛车手伺机竞相领先。

2 remains   

n.剩余物，残留物；遗体，遗迹

参考例句：

• He ate the remains of food hungrily.他狼吞虎咽地吃剩余的食物。
• The remains of the meal were fed to the dog.残羹剩饭喂狗了。

3 intake   

n.吸入，纳入；进气口，入口

参考例句：

• Reduce your salt intake.减少盐的摄入量。
• There was a horrified intake of breath from every child.所有的孩子都害怕地倒抽了一口凉气。